Frozen meals tend to have very high levels of salt in them. They also have poor quality ingredients, so are not as nutritional as you think.
If you must live on frozen meals, try making them in large quantities yourself over a weekend, and freeze them. Most basic 'meat & vegetables' meals can be frozen and re-heated.
If I were to use a frozen meal, I'd have to defrost, and then cook, and likely would want something alongside it - like veg or salad. Unless Chef Mike (Microwave) is employed. I find it hard to see this being that much quicker.
I've had one pre-prepared bought in meal this year. Most convenience foods like this have a strange processed taste - that isn't just salt. This is coming from someone whose sense of taste has been shot totally to pieces.
A part that's much quicker is that you just grab a frozen meal from the store, rather than first figuring out what to cook and then searching for ingredients at various sections of the store.
Then for the first few days after you shop, cook the meals you planned. And towards the end of the week, open the fridge/cupboard and think "what needs to be used up?"
The more you do it, the easier it gets.
It is generally thought that we eat way more salt than is considered healthy. Too much salt increases the risk of high blood pressure, cardiovascular diseases, and kidney failure.
The Dutch government — to cite just one example — states that 80% of people in the Netherlands eat too much salt¹; i.e., more than 6 grammes per day, and lists the health issues mentioned above.
Conversely, eating too little salt is quire rare nowadays due to the high amount of salt in store bought products.
1: https://www.voedingscentrum.nl/encyclopedie/zout-en-natrium....